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Unread 10-27-2009, 09:36 PM   #4
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Name: 3050rpm
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Join Date: Jul 2006
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Your Ride: 1995 325i
I doubt that the sensor could have suddenly gone bad, I think it's just something amiss with from being manipulated, they can be a bit touchy the older they get. Try removing the contact, inspect, clean (sand paper, emery board), and reinsert firmly and properly. I don't think it's imperative to have changed the thermostat and the hoses, but certainly make regular inspection of the hoses as they're approaching nine years of age.
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